Piston ring



J. A.' BARRIER,

v. PISTON RING Fild July 19. 19A

Joseph Barrz'en Patented Mar. 18,* 1924.

tenses! seien.

y.rosiers A. BARRIER; on OAKLAND, neuronale.

To all whom t may concern:

Be it known that I, JOSEPH A. BARRIER,

a citizen of 'the United States, residing at Oakland, in the county of Alameda and State of California, have linvented certain new and useful Improvements in Piston Rings, of .which the following is a specification.

My'invention is an improved piston packingring which expands into contact with the cylinder andY into contact with the sides of the piston grooves.

Referring to the yannexed drawing which forms a part of this specification:

Figure 1 is a side view ofl a piston in the grooves of-whieh are contracted three of `my packing rings. Y

Figure2 is a side view, of my packing ring.

in ring taken on line 3-#43 of Figure 2.

igure 4 is a. section corresponding to Iigure of a `modified form of my packing acters as those parts in this specification.

The preferred formv of my piston pack- :rn ing ring as shown in Figs. 1 to 3 inclusive,

includes three annular split ring members,

l an intermediate ring memberl 1, anr upper ringi member 2 and a lower ring member 3. The intermediate member 1 has outer :xs4 upper and lower beveled faces4 and 5. The

ring members 2 and 3 have inner beveled faces 6 and 7 which engage thea-faces 4 and 5 of member 1 with their peripheries Sand 9 flush with the periphery 10 of 'ring membei' 1. The width of the periphery 10 of ring member 1 the width ol the peripheries 9 and 10 of ring members 2 and 3, thus equalizin the peripheral engaging action of said mem ers.

short; of the bearing surface Figure 3 is a', section of my'piston pack-V The parts of my invention are designatedy inthe drawing by .the same reference charH` esignating corresponding;

is substantially the same asV :eieren ame. l application med July'is, i920. semana. 391,464.

The ring is placed in the piston groove 11 member 2 withfthe upper side 12 of rin groove and engaging the upper side of sai the lower' surface 13 of ring engaging the lower. side of said groove. The ring members expand diametrica-lly so that their peripheries enga cylinder and the mem rs 2 and 3 expand axially so that their upper and lower sides.; engage the upper and Vlower sides of the piston groove 11, thus taking up the wear of the cylinder and the sides of the. piston grooves. The bevelled faces 6 and 7 of the ring members 2 and 3 respectively terminate I of the ring members thereby forming an oil groove be. tween each of the said rin members and the intermediate ring mem er.

In the form of my rin shown in Fig. 4, I eliminate the ring member 3 and the beveled 'surface 5 and'form the lower side 14 ofthe rin member 1 straight to engage `the lower side of the piston'groove 11 the upper side 12 of rin ,member 2 engaging the upper side of sai groove.

Havingdescjibed my invention, l'. claim: Ina resilient split packing ring, the combination of a maJor intermediate ring member and two minor side ring members, all

ofsaid members having cylinder bearingY sur-faces of substantially the same width, the said major, intermediate ring member having its opposite sides bevelled from the inner, upper and lower edges uninterruptedly to the cylinder bearing 'surface thereof and each of the said minor side ring members having 'their7 inner surfaces beveled from a point substantially distant from the cylinder hearing surfaces thereof and said bevels continuing uninterruptedly to the upper and lower edges respectivelyithereof. In testimony whereof I aiix my signature.

' JOSEPH A. BAERER.

member 3 e the suracefof the 

